If your brain is a Jack Russell, it’s not happy unless it has problems to solve. And it will create problems just to solve them. This plucky brain can chew through relationships the way a real Jack Russell chews through sofas. Or is your brain a German Shepherd? Or a Bichon Frise?

When it comes to sandcastles, some kids take more glee in building them, while others prefer to pulverize them into oblivion. As we grow up and enter in the workforce, we may bring those tendencies with us.